scholarly journals Cyanobacteria, cyanotoxins, and their histopathological effects on fish tissues in Fehérvárcsurgó reservoir, Hungary

2021 ◽  
Vol 193 (9) ◽  
Author(s):  
Damjana Drobac Backović ◽  
Nada Tokodi ◽  
Zoran Marinović ◽  
Jelena Lujić ◽  
Tamara Dulić ◽  
...  

AbstractCyanobacteria are important members of lake plankton, but they have the ability to form blooms and produce cyanotoxins and thus cause a number of adverse effects. Freshwater ecosystems around the world have been investigated for the distribution of cyanobacteria and their toxins and the effects they have on the ecosystems. Similar research was performed on the Fehérvárcsurgó reservoir in Hungary during 2018. Cyanobacteria were present and blooming, and the highest abundance was recorded in July (2,822,000 cells/mL). The species present were Aphanizomenon flos-aquae, Microcystis flos-aquae, Microcystis wesenbergii, Cuspidothrix issatschenkoi, Dolichospermum flos-aquae, and Snowella litoralis. In July and September, the microcystin encoding gene mcyE and the saxitoxin encoding gene sxtG were amplified in the biomass samples. While a low concentration of microcystin-RR was found in one water sample from July, analyses of Abramis brama and Carassius gibelio caught from the reservoir did not show the presence of the investigated microcystins in the fish tissue. However, several histopathological changes, predominantly in gills and kidneys, were observed in the fish, and the damage was more severe during May and especially July, which coincides with the increase in cyanobacterial biomass during the summer months. Cyanobacteria may thus have adverse effects in this ecosystem.

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Andrew Marks

AbstractThe structure of exports from Australia to China reveals the dominance of primary products with the structure of imports from this country reflecting the over-reliance on manufacturing goods. This has restrained and led to fluctuations in the balance of trade surplus in Australia thereby leading to lower than otherwise and more volatile output and employment growth. The pattern of trade between Australia and China is representative of trade between Australia and the rest of the world thereby magnifying these adverse effects. Strategic trade policy has the potential to alleviate these negative effects on output and employment growth in Australia.


2010 ◽  
Vol 46 (4) ◽  
pp. 617-632 ◽  
Author(s):  
André de Oliveira Baldoni ◽  
Farah Maria Drumond Chequer ◽  
Elisa Raquel Anastácio Ferraz ◽  
Danielle Palma de Oliveira ◽  
Leonardo Régis Leira Pereira ◽  
...  

In recent decades, the world has undergone a demographic transformation with a rapid growth of the elderly population, resulting in an increased demand for funds to maintain their health and drug consumption. Pharmacokinetic and pharmacodynamic changes occurring in the elderly can interfere directly in the adverse effects of drugs and increase the risk of intoxication. In addition, there are external factors interfering with the pharmacotherapy of the elderly, such as inappropriate use and the lack of access to information. Many therapeutic classes of drugs should be used with caution or avoided in the elderly population, such as anti-inflammatory and some anti-hypertensive drugs, diuretics and digitalis. If not managed carefully, these medicines can affect the safety and quality of life in the elderly. Thus, the aim of this review was to identify drugs that should be used with caution in elderly patients in order to avoid intoxication and/or adverse drug events.


2021 ◽  
Vol 16 ◽  
Author(s):  
Bensu Karahalil ◽  
Aylin Elkama

Background: Coronavirus disease 2019 (COVID-19) is a new strain of coronavirus. It is characterized by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It has quickly influenced all over the world since it spreads easily. Common symptoms are fever, cough, difficulty in breathing and muscle aches. Despite the urgent need to find an effective antiviral treatment, already available agents are being used alone or in combination all over the world. At the beginning of the pandemic, death rates of infection caused by COVID-19 are high but "is COVID-19 responsible for all deaths?", or “are there any contributions of the frequently used drugs in this period to these deaths?” Surely herd immunity plays a major role and has the contribution in the decline in mortality rates. Meanwhile, it is kept in mind that due to safety concerns, changes have also been made to the dosage and combined use of frequently used drugs. Objective: In this review, answers to two questions above and the safety of treatments, toxicities of agents involving chloroquine, hydroxychloroquine, remdesivir, favipiravir, lopiravir/ritonavir, sarilumab, tocilizumab, siltuximab, corticosteroids and bromhexine which are the most frequently used in both Turkey and all over the world will be summarized. Conclusion: Among these drugs favipiravir seems the most promising drug due to more tolerable adverse effects. More clinical trials with large sample sizes are needed to find the most effective and safe drug for COVID-19 treatment.


2015 ◽  
Vol 2015 ◽  
pp. 1-19 ◽  
Author(s):  
Junyi Wu ◽  
Yanmei Hu ◽  
Yin Zhu ◽  
Ping Yin ◽  
Gerhard Litscher ◽  
...  

As a further step towards the modernization of acupuncture, the objective of this review was to figure out the frequency and severity of adverse complications and events in acupuncture treatment reported from 1980 to 2013 in China. All first-hand case reports of acupuncture-related complications and adverse events that could be identified in the scientific literature were reviewed and classified according to the type of complication and adverse event, circumstance of the event, and long-term patient outcome. The selected case reports were published between 1980 and 2013 in 3 databases. Relevant papers were collected and analyzed by 2 reviewers. Over the 33 years, 182 incidents were identified in 133 relevant papers. Internal organ, tissue, or nerve injury is the main complications of acupuncture especially for pneumothorax and central nervous system injury. Adverse effects also included syncope, infections, hemorrhage, allergy, burn, aphonia, hysteria, cough, thirst, fever, somnolence, and broken needles. Qualifying training of acupuncturists should be systemized and the clinical acupuncture operations should be standardized in order to effectively prevent the occurrence of acupuncture accidents, enhance the influence of acupuncture, and further popularize acupuncture to the rest of the world.


2019 ◽  
pp. 227-232
Author(s):  
Edward B. Barbier

This concluding chapter looks at the future of water. There are two possible paths for managing water. First, if the world continues with inadequate governance and institutions, incorrect market signals, and insufficient innovations to improve efficiency and manage competing demands, most chronic water and scarcity problems will continue to worsen. The world will see a future of declining water security, freshwater ecosystem degradation, and increasing disputes and conflicts over remaining water resources. The alternative path to managing water is the one offered by this book. If, in anticipation of the coming decades of increasing water scarcity, humankind is able to develop appropriate governance and institutions for water management, instigate market and policy reforms, and address global management issues, then improved innovation and investments in new water technologies and better protection of freshwater ecosystems should secure sufficient beneficial water use for a growing world population.


Author(s):  
David Balbino Pascoal ◽  
Isabela Macêdo de Araujo ◽  
Lorenna Peixoto Lopes ◽  
Cristiane Monteiro da Cruz

AbstractWomen have metabolic, immunological, and genetic variables that ensure more protection from coronavirus infection. However, the indication of treatment for several pathologies and contraception is determined by hormones that have adverse effects and raise doubts about their use during the COVID-19 pandemic. Therefore, the present study searches women specificities and the relation between female sexual hormones and COVID-19, and reports the main recommendations in this background. To this end, a review of the literature was conducted in the main databases, auxiliary data sources, and official websites. Therefore, considering the hypercoagulability status of COVID-19, the debate about the use of contraceptives due to the relative risk of thromboembolic effects that they impose arises. However, the current available evidence, as well as the recommendations of main health organs around the world, demonstrate that the use of hormonal contraceptives must be maintained during the pandemic.


The electromagnetic waves have developed the communication system today. They are around the world completely and our environment remains under the influence of radio waves radiating from mobile phone towers and cellphones. The adverse effects of e-pollution are not subject to some form of surroundings. Radioactive radiation directly affects biomolecules such as DNA and produces genetic toxicity. In addition to neuron damage, character disorder has seen in flying birds and mammals. The radiation can have an impact on the reproduction of animals and mammals and is therefore a major cause of concern in the present.


2002 ◽  
Vol 2 (1) ◽  
pp. 46-64 ◽  
Author(s):  
Elizabeth L. Chalecki

Terrorism is a constant and fearful phenomenon, as America has learned to its recent and terrible cost, and like the nine-headed hydra of ancient mythology, as soon as one group or method is terminated, more spring up to take its place. Environmental terrorism adds a new dimension to this phenomenon, identifying the target as a natural resource or environmental feature. At a time when populations all over the world are increasing, the existing resource base is being stretched to provide for more people, and is being consumed at a faster rate. As the value and vulnerability ofthese resources increases, so does their attractive ness as terrorist targets. History shows that access to resources has been a proximate cause of conflict, resources have been both tools and targets of conflict, and environmental degradation and disparity in the distribution of resources can cause major political controversy, tension, and violence. The purposeful destruction of a natural resource can now cause more deaths, property damage, political chaos, and other adverse effects than it would have in any previous decade. The choice of environmental resources as targets or tools ofterrorism is consistent with both the increasing lethality ofterrorism and the growing envi ronmental awareness on the part of the public.


Author(s):  
Güzide Karakuş ◽  
Fatma Selin Sak ◽  
Ahu Altınel

The coronavirus (COVID-19) pandemic, which started in China as of December 2019, has spread all over the world and caused different adverse effects in each country. The coronavirus has affected millions of people around the world and caused thousands of deaths. The pandemic, which causes us to question our knowledge to be true and is a new factor that should be seen as a risk in future planning, has brought new regulations in all vital activities. The fact that airline transportation is one of the sectors most affected by coronavirus determined the scope of the study. Within the scope of the study, exploratory case study was preferred and how airport operations were affected by the COVID-19 pandemic was illustrated.


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